Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B28—WORKING CEMENT, CLAY, OR STONE
  • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
  • B28B7/00—Moulds; Cores; Mandrels
  • B28B7/0002—Auxiliary parts or elements of the mould
  • B28B7/0014—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B28—WORKING CEMENT, CLAY, OR STONE
  • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
  • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
  • B28B17/009—Changing the forming elements, e.g. exchanging moulds, dies
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B28—WORKING CEMENT, CLAY, OR STONE
  • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
  • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
  • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
  • B28B3/021—Ram heads of special form
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B28—WORKING CEMENT, CLAY, OR STONE
  • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
  • B28B7/00—Moulds; Cores; Mandrels
  • B28B7/0097—Press moulds; Press-mould and press-ram assemblies
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C33/00—Moulds or cores; Details thereof or accessories therefor
  • B29C33/30—Mounting, exchanging or centering
  • B29C33/305—Mounting of moulds or mould support plates
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B30—PRESSES
  • B30B—PRESSES IN GENERAL
  • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
  • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
  • B30B15/026—Mounting of dies, platens or press rams
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B30—PRESSES
  • B30B—PRESSES IN GENERAL
  • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
  • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
  • B30B15/028—Loading or unloading of dies, platens or press rams

Definitions

• a method of mounting a mould system in a block stone moulding machine, and a correspondingly adapted moulding machine and mould system is provided.
• the present invention relates to a block stone moulding machine and a mould system therefor.
• mould systems consisting of mould frames with respective, particularly shaped moulding cells and associated compacting heads in the form of a plate with downwardly projecting, rigid pressing foot portions having lower, horizontal press plates matching the shape of the moulding cells, such that all these press plates can be moved down into the moulding cells at the same time.
• the mould frame is placed on a mould ⁇ ing surface, and for each operation concrete mass is filled into all the moulding cells by means of a con ⁇ crete charged filler cart or the like, which is dis ⁇ placed over the top side of the mould frame and re ⁇ tracted therefrom, whereafter the compacting head is lowered from a raised position for pressing the press plates against the concrete mass in each of the moulding cells, while the mould is vibrate 1 .
• the concrete mass is compacted.
• the compacting head When the desired product height has been achieved the compacting head is arrested in its lower position and the mould frame is pushed upwardly, such that the moulded block stone members are left free ⁇ ly standing, and finally also the compacting head is raised from its holding engagement with these members, whereafter the stone members with the associated mould ⁇ ing plate are automatically removed from the production area.
• the mould frame is lowered into its working posi ⁇ tion on the moulding plane, and a new working cycle can be initiated.
• the means for anchoring and vertically moving the mould frame should be mounted and controlled with high accuracy relatively to the means carrying the compacting head, such that by the lowering of the compacting head the press plates thereof will pass down into the mould ⁇ ing cells without hitting the top edges of the cells.
• the clearance between the outer edges of the press plates BAOand the surrounding walls of the moulding cells should be only some 0.5 mm, and the tolerance of the associated guiding should be still much finer.
• the relevant holding means are constituted by heavy machine parts, which can well be held and guided with a high mutual accuracy. The rest, then, will be a question of the mould parts being secured to the holding means with the same high accuracy, and here it is important that different sets of mould systems should be mount- able, such that it is not sufficient to arrange for an accurate mounting once and for all.
• the mould frame is suitably made with laterally protruding flanges having accurately placed holes for receiving spanner means on the associated, guided rais ⁇ ing and lowering means, while the compacting head is secured to an overlying carrier head, which is mounted and guided just as accurately relatively to the holding means of the mould frame.
• this carrier head is provided with accurately positioned holes for receiving clamp bolts for the fixation of the top plate of the compaction head, this top plate correspondingly being provided with accurately positioned bolts or bolt holes, such that the desired result will be obtained when both the mould frame and the compaction head are fastened by bolting, with the use of the already pre ⁇ pared bolt holes.
• the holding means of the carrier head are constituted by depending, upwardly tightenable gripping members, which are profiled so as to be able to receive correspondingly profiled, upstand ⁇ ing engagement members at the top side of the compacting head, such that the compacting head can be mounted on the carrier head by a horizontal insertion movement and a subsequent tightening up of the gripping members of the carrier head for effectively anchoring clamping the engagement members of the compacting head.
• This inser ⁇ tion is effected with the compacting head in engagement with the mould frame and with the press plates centered in the moulding cells, viz. by a premounting of distance pieces between selected edge portions of the press plates and the adjacent wall portions of the respective moulding cells.
• the invention provides for an additional important possibility, viz. that of the compacting head being secured to the carrier head automatically, without the troublesome use of the spanner bolts as used herein ⁇ before.
• no bolt tightening is to be effected, but just a pulling up of the said gripping members, and such a pulling up may be effected in an easy manner by means of one or more working cylinders or correspondingly simple moving and holding means.
• Such cylinders may well be placed and perform tightening operations at manually not easily accessible places, and it is thus an attractive result of the invention that the centered fastening of the compacting head can be effected in a quite simple manner at suitable places, also where these would not be easily accessible.
• Fig. 1 is a perspective view of parts of a block stone machine and a mould system adapted therefor,
• Fig. 2 is a lateral view thereof, and Figs. 3 and 4 are detailed views of a fastening arrangement.
• a couple of main parts of a block stone machine is indicated, viz. carrier means 2 for holding a mould frame above a moulding table 4 and an upper carrier head 6 for an underlying compact ⁇ ing head for cooperation with the mould frame.
• carrier means 2 for holding a mould frame above a moulding table 4 and an upper carrier head 6 for an underlying compact ⁇ ing head for cooperation with the mould frame.
• an associated mould system is illu ⁇ strated, consisting of a lower mould frame 8 having throughgoing moulding cells and an upper compaction head 12 provided with depending pressing foot portions 14, which project down into the moulding cells and are pro ⁇ vided with lowermost, transverse press plates 16 shaped according to the cross sectional shape of the moulding cells and being only slightly smaller than that.
• the compacting head has a top plate 18, to which the foot portions 14 are secured by welding, and the mould frame 8is provided with laterally projecting flanges 20 having bolt holes 22.
• the carrier means for the mould frame 8 are con ⁇ stituted by opposed, horizontal carrier pieces 24 oper ⁇ able to support the flanges 20 of the mould frame and having bolting holes 26 for cooperation with the holes 22, such that the mould frame 8 may be anchored in a conventional manner with a highly accurate positioning relatively to the moulding machine, despite that in connection with the invention it is not so important that this accuracy by particularly high.
• the carrier pieces 24 are mounted in a vertically movable manner in the machine, here illustrated by the the use of an underlying, vertical working cylinder 28.
• Conventional ⁇ ly, corresponding bolt holes 30 and 32 could be provided in the lower flange portions 34 of the carrier head 6 and in the top plate 18 of the compacting head 12, but in connection with the invention such holes are not used.
• the invention is of a character such that these holes may well be present, inasfar as the invention can be exploited by simple additions to already consisting machine and mould parts.
• the compacting head there is. mounted on the top side of the top plate 18 of the compacting head some lying C-profiled holding members 44, which are open upwardly and in the length direction forwardly towards the carrier head 6.
• this head there is corresponding ⁇ ly mounted some holding pieces 46 rigidly secured to the lower ends of piston rods depending from respective, rigidly secured working cylinders 48.
• these holding pieces 46 assume a lowered free position they will be operable to freely receive the inserted holding members 44 as illustrated in Fig. 3. This insertion is effected by the mould system 8,12 as shown in Fig.
• the cylinders 48 are actuated for pulling up the holding pieces 46, whereby these, as shown in Fig. 4, will clamp the upper profile flanges 54 of the C-profiled holding members 44 upwardly against the lower side of the lower flanges 34 of the carrier head 6, such that hereby the entire compacting head 12 will be fixed the the carrier head in a correctly centered position relative to the the mould frame.
• the profile members 44 there is a certain clearance for the holding pieces 46 in both the longitudinal and the cross direction, such that the tolerance requirements will here be very low.
• the distance pieces 52 can be removed, whereafter these parts 12 an 6 are free ⁇ ly displaceable in the vertical direction, with a main ⁇ tained accurate mutual centering in the horizontal plane.
• the mould frame 18 can be lifted slightly, so as to get free of the cart 50, whereafter the cart can be removed from the area.
• the mould frame 8 is lowered to rest on the moulding table 4 , and the compacting head 12 can be raised until there is sufficient room for the introduction of the said filler cart or frame for sup ⁇ plying concrete mass to the mould frame 8.
• the moulding machine can operate fully conventionally, the compacting head 12 being lowered for compacting the concrete mass in the single moulding cells 10 and later being arrested for pressing down the moulded stone members towards the moulding table 4 while the mould frame 8 is moved upwardly from the moulded stone members for liberating these to be delivered out ⁇ wardly along the conveyor path 53, Fig. 2.
• the invention is of course not restricted to the illustrated arrangement, in which the carrier head 6 is provided with upwardly retractable holding pieces 46, since, by way of example, it would be equally well pos ⁇ sible to make use of upwardly retractable profiled hold ⁇ ing portions cooperating with upstanding, rigid holding head portions on the compacting head 12.
• the invention provides for the special advantage that in a relatively simple manner the invention can be realized also in connection with already existing moulding machines, namely with only the discussed modifications of the carrier head and the compacting heads 12, respectively.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Ceramic Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
• Moulds, Cores, Or Mandrels (AREA)
• Moulds For Moulding Plastics Or The Like (AREA)
• Press-Shaping Or Shaping Using Conveyers (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8147150

Family Applications (1)

Country Status (6)

Cited By (7)

Families Citing this family (4)

Citations (4)

• 1989
  • 1989-12-01 DK DK606389A patent/DK606389D0/da not_active Application Discontinuation
• 1990
  • 1990-11-30 AU AU78956/91A patent/AU7895691A/en not_active Abandoned
  • 1990-11-30 DE DE19904092109 patent/DE4092109T/de not_active Withdrawn
  • 1990-11-30 WO PCT/DK1990/000313 patent/WO1991008091A1/en active Application Filing
  • 1990-11-30 NL NL9022126A patent/NL193312C/nl not_active IP Right Cessation
• 1992
  • 1992-05-29 GB GB9211425A patent/GB2256165B/en not_active Expired - Fee Related

Patent Citations (4)

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